Expansion joint



July 8, 1930.

" A. c. FISCHER EXPANSION JOINT Original Filed May 2,5. 1921 Patented `Fuly 8, 1930 NITE' STATE PATENT OFFICE ALBERT C. FISCHER, OF CHICAGG, ILLINOIS, .ASSIGNOR T0 THE PHILIP CAREY MANU- -IFAC'lfll'lfIhll' COMPANY, A. CORPORATION OF OHIO EXPANSION .TINT

@riginal application filed May 25, 1921,

struction purposes and any situation where xpansion and contraction must be provided or. Y, e

Heretofore it has been customary t'o either our the joint or build up solid bituminous joints or solid composition joints, which, upon being put under pressure would be compressed and become elongated surfaces, or bulge under compression.

This invention relates particularly to a flexible, boardlike structure in contra-distinction to a rigid, boardlike structure, and

is composed of ve etable fibres of various kinds, such as, fiax, emp, straw or any other ingredients which may be suitably matted together in felted form, to form such fibrous material into continuous sheets. This vegetable material may be waterproofed or not, as is preferred, by injecting therein any bituminous or petroleum waterproofing saturants adapted thereto, thus making the material waterproof but not destroying the'felted,

mattedform, which gives to the expansion joint the inherent power of compression within itself and the power to re-expand of its own accord.

The use of such fbro material prevents breakage of the joint, thus enabling it to be' handled in a rough manner and stlll not be destroyed, whereas all solid bituminous joints, whether provided with felt sides or otherwise, become very brittle in cold weather and a minimum jshock breaks or cracks the entire joint.

Another object of my invention is to form this fibrous material as in matted form in a' wet condition, then run through form presses or suitable machiner to mat the material together. The materlal should then prefer- Serial No. 472,319. Divided and this application led April 14, 1926.. -Serial No. 101,939.

than solid bituminous joints, thus affecting economy in transportation and 'affecting economy in the necessary amount of solid material neededjfor the expansion joint. Heretofore, the solid bituminous joints, when under compression in warm weather, have always oozed out of the crevice and have been flattened on the pavement by the passing trafiic, so that the `bituminous matter could not get back into the crevice, thus making a defective joint. By using'a fibrous body of the type described this cannot happen, as

the material is both compressible within itself and reexpansive when the pressure is released, without oozing out of the crevice. The material of the present invention may be waterproofed, as stated before, and suitably coated in various ways to preserve its body and protect it against the wear-of the tralic.

With these and incidental objects in view, the invention consists of certain novel features of construction and combination of designs, and methodsof coating or double s aturating, the essential elements of which are hereinafter described.

With reference tothe drawing which accompanies and forms a part of this specification, Figure 1` represents a cross section of a fibrous joint, that portion indicated by the letter -abeing thoroughly waterproofed and saturated so that it has a tough material which has its sides shown as at bfaced with a saturated felt or other suitable material, and a base -c, which may or may not be waterproofed, of fibrous material, more or less in a matted state. The body ,-amay consist of solid bituminous matter formed as' a crown on the joint, or the crown may be suitably immersed in material having penetrating powers suficient to form a heavy, solid crown. v

Figure 2 indicates a fibrous, matted joint, having a vsolid bituminous crown, as ind1- cated at -a-, faced witlra saturated felt, paper or other suitable material, as shown at -b. A center fibrous body which may or may not be waterproofed, as at -c-,and a base portion simulating the crown portlon,

other words, this crown may be brous matej rial immersed in a bituminous material, may be solid bituminous material having felt upon the sides, or may be fibrous material immersed in any suitable material having penetrating powers sulflcient to form a heavy vsolid crown. In the art such material would readily be adapted by those skilled in utilizing materials for this purpose. For instance, parafine would accomplish this result, wax, sealing wax, resinous compounds, or any suitable enetrating medium which could be lique ed and penetrated into the fibrous material.

My invention consists of the novel arrangement of a separable crown placed upon a base for the purpose of economy, in avoiding the use of completely solid materials. The base structure -c may be waterproofed with light or heavy saturants, as described, and has flexible reinforcing material therein to give strength to the structure.

I claim:

1. Expansion joint comprising a flexible, board-like strip embodying in its structure interrupted and substantially parallel mats of fibrous material permeated with bituminous material and irregularly overlapping one another and one edge crownedwith a solid mastic, the sides of the crowning edge of said strip being surfaced with pliable waterproofing material.

2. An expansion joint comprising a flexible, board-like strip embodying in its structure interrupted and substantially parallel mats of fibrous material irregularly overlapping one another, one longitudinal edge of said strip being provided with a substantially solid mastic crown.

3. An expansion joint comprising a flexible boardlike strip embodying in its` structure interrupted and substantially parallel mats of fibrous material irregularly overlapping one another, one longitudinal edge of said strip being treated with a waterproofing material to provide the joint with a substantially solid mastic crown.

4. A n expansion joint comprising a iieXible, boardlike strip embodying in its structure interrupted and substantially parallel mats `of fibrous material irregularly overlapping one another, one longitudinal'edge of lsaid strip being provided with a. substantially solid mastic crown and said crown having its sides surfaced withlayers of pliable material.

5. An expansion joint comprising a ilexible, boardlike strip embodying in its structure interrupted and substantially parallel mats of fibrous material irregularly overlapping one another, one longitudinal4v edge j oi said strip being provided with a substantially solid mastic crown, and said crown hav- :ifng its'sides surfaced with strips of saturated 6. An 'expanson joint comprising a exible, boardlike strip embodying in its structure interrupted Iand substantially parallel mats of fibrous material irregularly overlapping one another, one longitudinal edge of said strip being provided with a substantially solid mastic crown and said crown'having its sides surfaced with layers of pliable material of a plastic consistency.

7. An expansion joint comprising a dexible boardlike strip having a'main fibrous portion and a separately formed crown strip attached together, said crown being of di'er- 'ent composition than the main body portion and including a considerably greater proportion of bituminous material.

8. An expansion joint comprising a ilexible boardlike strip of librous material having a separately formed crown strip adhesively secured to one edge thereon, said crown including solid bituminous material.

9. An expansion joint comprising a flexible boardlike strip of brous material having a separate crown mounted thereon, said crown including solid bituminous material and provided with saturated felt acings.

Signed at Chicago, Illinois, this 30th day of March 1926.

l j C. FISCHER. 

